EA200600302A1 - METHOD OF LOADING OF FINE-GRAINED METALS INTO AN ELECTRIC ARC FURNACE - Google Patents

METHOD OF LOADING OF FINE-GRAINED METALS INTO AN ELECTRIC ARC FURNACE

Info

Publication number
EA200600302A1
EA200600302A1 EA200600302A EA200600302A EA200600302A1 EA 200600302 A1 EA200600302 A1 EA 200600302A1 EA 200600302 A EA200600302 A EA 200600302A EA 200600302 A EA200600302 A EA 200600302A EA 200600302 A1 EA200600302 A1 EA 200600302A1
Authority
EA
Eurasian Patent Office
Prior art keywords
furnace
fine
electric arc
arc furnace
loading
Prior art date
Application number
EA200600302A
Other languages
Russian (ru)
Other versions
EA008735B1 (en
Inventor
Хайнц Айхбергер
Карл-Йозеф Шнайдер
Original Assignee
Оутокумпу Текнолоджи Ой
Смс Демаг Аг
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Оутокумпу Текнолоджи Ой, Смс Демаг Аг filed Critical Оутокумпу Текнолоджи Ой
Publication of EA200600302A1 publication Critical patent/EA200600302A1/en
Publication of EA008735B1 publication Critical patent/EA008735B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/527—Charging of the electric furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

В соответствии с предложенным способом загрузки в электрическую дуговую печь (1) мелкозернистых металлов, в частности, железа, полученного методом прямого восстановления, металл, подводимый через подающую трубу (12) к отверстию (10), выполненному в своде (4) печи, вводят в печь (1) через указанное отверстие (10) в виде потока (11) сыпучего материала, при этом металл падает на расплав (13) только за счет гравитации. Кроме того, описана электрическая дуговая печь (1), подходящая для этой цели. Ввод в значительной степени без потерь даже мелкозернистого материала с размером зерна менее 1 мм достигается за счет пропускания потока (11) сыпучего материала после прохождения подводящей трубы (12), до его поступления в печь (1), через дозирующее сопло (8). В результате поток (11) сыпучего материала входит в печь, по существу, невозмущенным.In accordance with the proposed method of loading into the electric arc furnace (1) fine-grained metals, in particular, iron, obtained by direct reduction, the metal fed through the feed pipe (12) to the hole (10), made in the arch (4) of the furnace, enter in the furnace (1) through the specified hole (10) in the form of a flow (11) of bulk material, while the metal falls on the melt (13) only due to gravity. In addition, an electric arc furnace (1) suitable for this purpose is described. The loss of even a fine-grained material with a grain size of less than 1 mm is achieved to a large extent by passing the flow (11) of the bulk material after passing through the feed pipe (12), before it enters the furnace (1), through the dosing nozzle (8). As a result, the flow (11) of the bulk material enters the furnace, essentially unperturbed.

EA200600302A 2003-07-23 2004-07-01 Method of charging fine-grained metals into an electric-arc furnace EA008735B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333764A DE10333764B3 (en) 2003-07-23 2003-07-23 Charging fine, directly-reduced iron particles into arc furnace, passes stream of bulk material from downcomer through orifice plate, to enter furnace largely undisturbed
PCT/EP2004/007153 WO2005014868A1 (en) 2003-07-23 2004-07-01 Method of charging fine-grained metals into an electric-arc furnace

Publications (2)

Publication Number Publication Date
EA200600302A1 true EA200600302A1 (en) 2006-06-30
EA008735B1 EA008735B1 (en) 2007-08-31

Family

ID=33483049

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200600302A EA008735B1 (en) 2003-07-23 2004-07-01 Method of charging fine-grained metals into an electric-arc furnace

Country Status (15)

Country Link
US (1) US8391331B2 (en)
EP (1) EP1660688B1 (en)
KR (1) KR20060111902A (en)
CN (1) CN1826417B (en)
AR (1) AR045075A1 (en)
AT (1) ATE350496T1 (en)
AU (1) AU2004263608B2 (en)
BR (1) BRPI0412256B1 (en)
CA (1) CA2532927C (en)
DE (2) DE10333764B3 (en)
EA (1) EA008735B1 (en)
ES (1) ES2279390T3 (en)
TW (1) TW200508400A (en)
WO (1) WO2005014868A1 (en)
ZA (1) ZA200600897B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1993325B1 (en) * 2007-04-09 2011-09-14 GrafTech International Holdings Inc. Graphite electrode of increased length
DE102010045825A1 (en) * 2010-09-20 2012-03-22 Intracon Gmbh Charging shaft system and filling method
US9013778B2 (en) 2013-03-06 2015-04-21 Sage Electrochromics, Inc. Laser cuts to reduce electrical leakage
US9152001B2 (en) 2013-07-25 2015-10-06 Sage Electrochromics, Inc. Electrochromic devices having improved structure for reducing current leakage across lower transparent conductor layers
US20150153622A1 (en) 2013-12-03 2015-06-04 Sage Electrochromics, Inc. Methods for producing lower electrical isolation in electrochromic films
CN110337716A (en) 2017-02-27 2019-10-15 Sage电致变色显示有限公司 The method of electrical equipment and formation electrical equipment including substrate and transparency conducting layer

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
US3258328A (en) * 1962-08-23 1966-06-28 Fuji Iron & Steel Co Ltd Method and apparatus for treating steel
DE1217415B (en) * 1964-05-21 1966-05-26 Gussstahlwerk Oberkassel Ag Vo Process for extracting the furnace gases and for regulating the furnace pressure of an electric arc furnace, in particular for steel production and device for carrying out the process
US3472650A (en) * 1965-09-03 1969-10-14 Canada Steel Co Electric-arc steelmaking
FR1536190A (en) * 1965-09-03 1968-08-27 Metallgesellschaft Ag The Stee Electric furnace steel preparation process
US3385494A (en) * 1966-09-15 1968-05-28 Strategic Material Corp Scrap melting
GB1193527A (en) * 1968-10-04 1970-06-03 Ch Metall Zd Electric-Arc Furnace for Melting Synthetic Slag.
BE755725A (en) * 1969-10-23 1971-02-15 Huettenwerk Oberhausen Ag ARC OVEN EQUIPPED WITH AN IRON SPONGE CHARGING DEVICE
US4262057A (en) 1979-06-21 1981-04-14 Detrex Chemical Industries, Inc. Metal drawing compound composition and method of use
GB2115011B (en) * 1982-02-17 1985-12-04 British Steel Corp Improvements in or relating to a process for melting and/or refining steel
US4514218A (en) 1984-06-06 1985-04-30 Daidotokushuko Kabushikikaisha Reduced iron melting method using electric arc furnace
FR2681937A3 (en) * 1991-09-30 1993-04-02 Irsid Device for continuously loading metallic products in loose form into a metallurgical furnace and metallurgical furnace equipped with a loading device
AT400245B (en) * 1993-12-10 1995-11-27 Voest Alpine Ind Anlagen METHOD AND SYSTEM FOR PRODUCING A MELTING IRON
DE19608532A1 (en) * 1996-02-09 1997-08-14 Eisenbau Essen Gmbh Cooling the electrodes in an arc furnace during steel production
DE19744151C5 (en) * 1997-10-07 2004-08-26 Outokumpu Oyj Process for melting fine-grained, directly reduced iron in an electric arc furnace
LU90327B1 (en) * 1998-12-16 2000-07-18 Wurth Paul Sa Proc-d- for placing fines in a furnace - arc
DE19945489A1 (en) 1999-09-22 2001-04-05 Sms Demag Ag Method and device for introducing bulk material into a metallurgical vessel
AT408663B (en) * 2000-05-31 2002-02-25 Voest Alpine Ind Anlagen METHOD FOR MELTING IRON SPONGE AND ELECTRIC ARC FURNACE FOR IMPLEMENTING THE METHOD

Also Published As

Publication number Publication date
EA008735B1 (en) 2007-08-31
DE602004004159T2 (en) 2007-10-11
US20070082312A1 (en) 2007-04-12
EP1660688B1 (en) 2007-01-03
WO2005014868A1 (en) 2005-02-17
CA2532927A1 (en) 2005-02-17
AR045075A1 (en) 2005-10-12
DE10333764B3 (en) 2004-12-30
ATE350496T1 (en) 2007-01-15
EP1660688A1 (en) 2006-05-31
CN1826417B (en) 2012-06-20
DE602004004159D1 (en) 2007-02-15
TW200508400A (en) 2005-03-01
ZA200600897B (en) 2007-05-30
ES2279390T3 (en) 2007-08-16
US8391331B2 (en) 2013-03-05
CA2532927C (en) 2011-09-06
AU2004263608A1 (en) 2005-02-17
BRPI0412256B1 (en) 2015-06-09
KR20060111902A (en) 2006-10-30
CN1826417A (en) 2006-08-30
BRPI0412256A (en) 2006-09-19
AU2004263608B2 (en) 2009-07-23

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Legal Events

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MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ BY KG MD TJ TM

PD4A Registration of transfer of a eurasian patent in accordance with the succession in title
TC4A Change in name of a patent proprietor in a eurasian patent
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): KZ RU